Sergej Jaskiewicz
29 lines
843 B
Kotlin
Vendored
29 lines
843 B
Kotlin
Vendored
// IGNORE_BACKEND: JS
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fun interface Supplier<SupplierTP> {
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fun get(): SupplierTP
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}
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fun <FooTP> foo(t: FooTP): Supplier<FooTP> {
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return Supplier<FooTP> { t } as Supplier<FooTP>
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}
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// Let's do some enterprise-style programming shall we
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fun interface SupplierInvoker<SupplierInvokerTP1, SupplierInvokerTP2: Supplier<SupplierInvokerTP1>> {
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fun invokeSupplier(supplier: SupplierInvokerTP2): SupplierInvokerTP1
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}
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fun <BarTP1, BarTP2 : Supplier<BarTP1>> bar(): SupplierInvoker<BarTP1, BarTP2> {
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return SupplierInvoker<BarTP1, BarTP2> { supplier -> supplier.get() } as SupplierInvoker<BarTP1, BarTP2>
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}
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fun box(): String {
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val result1 = foo("OK").get()
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if (result1 != "OK") return result1
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val result2 = bar<String, Supplier<String>>().invokeSupplier { "OK" }
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if (result2 != "OK") return result2
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return "OK"
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}
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